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		<h1>shell 练习-检查错误</h1>
	
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		<span class="article__date">2017-10-12</span><br />
		
		
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			  	<a class="article__tag-link" href="/tags/shell练习/">shell练习</a>
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		<p>写一个shell脚本，检查指定的shell脚本是否有语法错误，若有错误，首先显示错误信息，然后提示用户输入q或者Q退出脚本，输入其他内容则直接用vim打开该shell脚本。</p>
<p>提醒： 检查shell脚本有没有语法错误的命令是  sh -n   xxx.sh</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div></pre></td><td class="code"><pre><div class="line"><span class="meta">#!/bin/bash</span></div><div class="line">sh -n <span class="variable">$1</span> 2&gt;/tmp/err</div><div class="line"><span class="keyword">if</span> [ $? -eq <span class="string">"0"</span> ]</div><div class="line"><span class="keyword">then</span></div><div class="line">    <span class="built_in">echo</span> <span class="string">"The script is OK."</span></div><div class="line"><span class="keyword">else</span></div><div class="line">    cat /tmp/err</div><div class="line">    <span class="built_in">read</span> -p <span class="string">"Please inpupt Q/q to exit, or others to edit it by vim. "</span> n</div><div class="line">    <span class="keyword">if</span> [ -z <span class="variable">$n</span> ]</div><div class="line">    <span class="keyword">then</span></div><div class="line">        vim <span class="variable">$1</span></div><div class="line">        <span class="built_in">exit</span></div><div class="line">    <span class="keyword">fi</span></div><div class="line">    <span class="keyword">if</span> [ <span class="variable">$n</span> == <span class="string">"q"</span> -o <span class="variable">$n</span> == <span class="string">"Q"</span> ]</div><div class="line">    <span class="keyword">then</span></div><div class="line">        <span class="built_in">exit</span></div><div class="line">    <span class="keyword">else</span></div><div class="line">        vim <span class="variable">$1</span></div><div class="line">        <span class="built_in">exit</span></div><div class="line">    <span class="keyword">fi</span></div><div class="line"><span class="keyword">fi</span></div></pre></td></tr></table></figure>
	

	
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